Nonmetal sound barrier

Abstract

The utility model relates to a non-metal sound barrier, which belongs to the technical field of noise protection, and comprises a noise reduction mechanism, a sound absorption cotton plate and a sound insulation plate, the noise reduction mechanism comprises a noise reduction plate, a plurality of internally hollow noise reduction blocks and a plurality of noise reduction sound boxes, a plurality of inserting grooves are formed in the top surface of the noise reduction plate, and a plurality of sound inlet holes communicated with the inserting grooves are formed in the plate surface of the noise reduction plate; the plurality of noise reduction blocks are respectively inserted into the plurality of insertion grooves, and a plurality of sound through holes are formed in the end surfaces of the noise reduction blocks; the two noise reduction loudspeakers are fixed to the two inner side walls of the noise reduction block respectively, and the sound emitting directions of the noise reduction loudspeakers are perpendicular to the axis direction of the multiple sound through holes. According to the utility model, the two noise reduction loudspeakers are fixed on the two inner side walls of the corresponding noise reduction blocks in the length direction of the carriageway, and the sound emitting directions of the noise reduction loudspeakers are vertical to the axes of the plurality of sound through holes, so that the noise generated by vehicles can be greatly reduced by offsetting, and the requirement of residents along the carriageway on low noise is met.

Description

Technical Field

[0001] The utility model relates to the technical field of noise protection devices, and particularly relates to a non-metallic sound barrier. Background Art

[0002] At present, most traditional non-metallic sound barriers mainly consist of multiple layers of sound-absorbing cotton boards and sound insulation. For example, a Chinese invention patent with the patent number CN111648262A and the name of a non-metallic sound barrier, and another Chinese invention patent with the patent number CN105088981A and the name of a non-metallic composite sound-absorbing board sound barrier. In the above patents, the multiple layers of sound-absorbing cotton boards and sound insulation boards can absorb or isolate noise, reducing the impact of noise along the carriageway on the lives of residents. However, the sound-absorbing effect of the sound-absorbing panel and the sound insulation board are both passive in absorbing or isolating noise, and the noise reduction effect is limited. Often, very thick sound-absorbing cotton boards and sound insulation boards are required to meet the requirements of residents living along the carriageway for low noise.

[0003] Therefore, how to design a practical non-metallic sound barrier that can greatly improve the noise shielding effect is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0004] The utility model provides a non-metallic sound barrier to solve the technical problem of the limited noise shielding effect of existing traditional non-metallic sound barriers.

[0005] The technical solution of the utility model to solve the above technical problems is as follows. A non-metallic sound barrier includes: a noise reduction mechanism, a sound-absorbing cotton board, and a sound insulation board.

[0006] The noise reduction mechanism includes a noise reduction board, a plurality of noise reduction blocks with hollow interiors, and a plurality of noise reduction speakers. The noise reduction board is parallel to one side of the carriageway, and a plurality of insertion slots are provided at intervals along the length direction of the carriageway on the top surface thereof. A plurality of sound inlet holes communicating with the plurality of insertion slots are provided on the board surface of the noise reduction board close to the carriageway; the plurality of noise reduction blocks are respectively slidably inserted into the plurality of insertion slots, and a plurality of sound through holes are provided on the end surface of the noise reduction block close to the carriageway; the plurality of noise reduction speakers are grouped in pairs, and multiple groups of the noise reduction speakers are respectively located in the plurality of noise reduction blocks. Each group of two noise reduction speakers are respectively fixed on the two inner side walls of the noise reduction block corresponding to the length direction of the carriageway, and their sound output directions are perpendicular to the axial directions of the plurality of sound through holes; one board surface of the sound-absorbing cotton board is fixedly parallel to the board surface of the noise reduction board away from the carriageway; one board surface of the sound insulation board is fixedly parallel to the board surface of the sound-absorbing cotton board away from the noise reduction board.

[0007] The beneficial effects of the present utility model are as follows: Breaking through the design constraints of traditional non-metallic sound barriers, first, a plurality of noise reduction blocks are slidably inserted into a plurality of insertion slots. Since a plurality of sound passing holes are provided on the end face of the noise reduction block close to the driving lane, most of the noise generated by transportation means can be introduced into the noise reduction block. Then, two noise reduction speakers are fixed on the two inner side walls of the corresponding noise reduction block in the length direction of the driving lane. Since the sound emitting direction of the noise reduction speaker is perpendicular to the axes of the plurality of sound passing holes, the noise generated by transportation means can be greatly reduced through cancellation, meeting the requirements of residents along the driving lane for low noise.

[0008] Based on the above technical solution, the present utility model can be further improved as follows.

[0009] Furthermore, it further includes a base. The base is located below the noise reduction board, the sound absorption cotton board, and the sound insulation board, and a first fixing groove is provided on the top surface of the base. A second fixing groove is provided at the bottom of the first fixing groove; the bottom sides of the noise reduction board and the sound insulation board are both inserted and fixed in the first fixing groove; the sound absorption cotton board is inserted and fixed in the second fixing groove.

[0010] Furthermore, it further includes a plurality of flow guiding plates with arc-shaped cross-sections. A plurality of the flow guiding plates are grouped in pairs, and all groups of the flow guiding plates are located in a plurality of the noise reduction blocks. The two flow guiding plates in each group are respectively fixed at one end of the corresponding two noise reduction speakers close to the driving lane.

[0011] The beneficial effect of adopting the above is that by respectively fixing the two flow guiding plates at one end of the noise reduction speaker close to the driving lane, the noise entering the noise reduction block can be guided, improving the noise reduction effect.

[0012] Furthermore, a plurality of openings respectively communicating with the plurality of insertion slots are provided on the other board surface of the noise reduction board away from the driving lane; a plurality of through holes are provided on the other end surface of the plurality of noise reduction blocks away from the driving lane.

[0013] Furthermore, the diameters of the plurality of sound passing holes gradually decrease from the direction close to the driving lane to the direction away from the driving lane.

[0014] The beneficial effect of adopting the above is that by gradually decreasing the diameters of the sound passing holes from the direction close to the driving lane to the direction away from the driving lane, it can prevent external rainwater from entering the noise reduction block. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a non-metallic sound barrier of the present utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of a noise reduction block in a non-metallic sound barrier of the present utility model;

[0017] Figure 3This is a schematic three-dimensional structure diagram inside the noise reduction block in a non-metallic sound barrier of the present utility model.

[0018] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0019] 1. Noise reduction mechanism, 11. Noise reduction board, 111. Insertion slot, 112. Sound inlet hole, 12. Noise reduction block, 121. Sound through hole, 13. Noise reduction speaker, 14. Flow guide plate, 2. Sound absorption cotton board, 3. Sound insulation board, 4. Base, 41. First fixing groove, 42. Second fixing groove. Specific embodiments

[0020] The principles and features of the present utility model will be described below with reference to the attached drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0021] As Figure 1 shown, a non-metallic sound barrier includes: a noise reduction mechanism 1, a sound absorption cotton board 2, and a sound insulation board 3.

[0022] The noise reduction mechanism 1 includes a noise reduction board 11, a plurality of internally hollow noise reduction blocks 12, and a plurality of noise reduction speakers 13. The noise reduction board 11 is parallel to one side of the driving lane, and a plurality of insertion slots 111 are provided at intervals along the length direction of the driving lane on its top surface. A plurality of sound inlet holes 112 communicating with the plurality of insertion slots 111 are provided on the board surface of the noise reduction board 11 close to the driving lane; a plurality of noise reduction blocks 12 are respectively slidably inserted into the plurality of insertion slots 111, and a plurality of sound through holes 121 are provided on the end surface of each noise reduction block 12 close to the driving lane; the plurality of noise reduction speakers 13 are grouped in pairs, and multiple groups of noise reduction speakers 13 are respectively located in the plurality of noise reduction blocks 12. The two noise reduction speakers 13 in each group are respectively fixed on the two inner side walls of the noise reduction block 12 corresponding to the length direction of the driving lane, and their sound output directions are perpendicular to the axial direction of the plurality of sound through holes 121; one board surface of the sound absorption cotton board 2 is fixedly parallel to the board surface of the noise reduction board 11 away from the driving lane; one board surface of the sound insulation board 3 is fixedly parallel to the board surface of the sound absorption cotton board 2 away from the noise reduction board 11.

[0023] In some specific embodiments, a base 4 may further be included. The base 4 is located below the noise reduction board 11, the sound absorption cotton board 2, and the sound insulation board 3, and a first fixing groove 41 is provided on its top surface. A second fixing groove 42 is provided at the bottom of the first fixing groove 41; the bottom sides of the noise reduction board 11 and the sound insulation board 3 are both inserted and fixed in the first fixing groove 41; the sound absorption cotton board 2 is inserted and fixed in the second fixing groove 42.

[0024] In some specific embodiments, the noise reduction mechanism 1 may further include a plurality of flow guide plates 14 each having an arc-shaped cross-section. The plurality of flow guide plates 14 are grouped in pairs, and multiple groups of flow guide plates 14 are all located in the plurality of noise reduction blocks 12. The two flow guide plates 14 in each group are respectively fixed at one end of the corresponding two noise reduction speakers 13 close to the driving lane.

[0025] Specifically, on the other board surface of the noise reduction board 11 away from the driving lane, a plurality of openings respectively communicating with the plurality of insertion slots 111 are provided; on the other end surfaces of the plurality of noise reduction blocks 12 away from the driving lane, through holes are provided.

[0026] Specifically, the aperture diameters of the plurality of sound conduction holes 121 gradually decrease in sequence from the direction close to the driving lane to the direction away from the driving lane.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A non-metallic sound barrier, characterized in that, Including: A noise reduction mechanism (1), the noise reduction mechanism (1) includes a noise reduction plate (11), a plurality of internally hollow noise reduction blocks (12) and a plurality of noise reduction speakers (13). The noise reduction plate (11) is parallelly located on one side of the driving lane, and a plurality of insertion slots (111) are arranged at intervals along the length direction of the driving lane on the top surface thereof. A plurality of sound inlet holes (112) communicating with the plurality of insertion slots (111) respectively are arranged on the plate surface of the noise reduction plate (11) close to the driving lane; A plurality of the noise reduction blocks (12) are respectively slidably inserted into the plurality of insertion slots (111), and a plurality of sound through holes (121) are arranged on the end surface thereof close to the driving lane; The plurality of noise reduction speakers (13) are grouped in pairs, and multiple groups of the noise reduction speakers (13) are respectively located in the plurality of noise reduction blocks (12). Two noise reduction speakers (13) in each group are respectively fixed on the two inner side walls of the noise reduction block (12) corresponding to the length direction of the driving lane, and their sound output directions are perpendicular to the axial directions of the plurality of sound through holes (121). A sound-absorbing cotton board (2), one plate surface of the sound-absorbing cotton board (2) is fixedly parallel to the plate surface of the noise reduction plate (11) away from the driving lane. A sound insulation board (3), one plate surface of the sound insulation board (3) is fixedly parallel to the plate surface of the sound-absorbing cotton board (2) away from the noise reduction plate (11).

2. The non-metallic sound barrier according to claim 1, wherein It further includes a base (4), the base (4) is located below the noise reduction plate (11), the sound-absorbing cotton board (2) and the sound insulation board (3), and a first fixing groove (41) is arranged on the top surface thereof, and a second fixing groove (42) is arranged at the bottom of the first fixing groove (41); The bottom sides of the noise reduction plate (11) and the sound insulation board (3) are both inserted and fixed in the first fixing groove (41); The sound-absorbing cotton board (2) is inserted and fixed in the second fixing groove (42).

3. The non-metallic sound barrier according to claim 1, characterized in that, The noise reduction mechanism (1) further includes a plurality of flow guide plates (14) with arc-shaped cross-sections, the plurality of flow guide plates (14) are grouped in pairs, and multiple groups of the flow guide plates (14) are all located in the plurality of noise reduction blocks (12), and two flow guide plates (14) in each group are respectively fixed at one end of the corresponding two noise reduction speakers (13) close to the driving lane.

4. A non-metallic sound barrier according to claim 1, characterized in that, A plurality of openings communicating with the plurality of insertion slots (111) respectively are arranged on the other plate surface of the noise reduction plate (11) away from the driving lane; A plurality of through holes are arranged on the other end surface of the plurality of noise reduction blocks (12) away from the driving lane.

5. A non-metallic sound barrier according to claim 1, characterized in that, The apertures of the plurality of sound through holes (121) gradually decrease from the direction close to the driving lane to the direction away from the driving lane.

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